Core-bar pusher.



J. R. MoWANE.

GORE BAR PUSHBR.

1 1.101.1101: rum) an 18, 1911.

Patented Aug. 13, 1912.

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ATTORNEY J. R. MoWANE. UORB BAR PUSHBR. APPLICATION FILED M11116, 1911.

Patented Aug. 13, 1912.

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, Ill MW h WW m a -HM u Halli nmmiulll i 0 w 1 WITNESSES ATTORN EY J. R. MoWANE.

CORE BAR PUSHER.

APPLICATION FILED MAY 16, 1911.

Patented Aug. 13, 1912.

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CORE BAR PUSHER.

APPLIOATION FILED MAY 10, 1911.

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, A 1 1 a N m. $1 mug WITNESSES .(JQf/Kjd' MCW INVENTOR,

ATTORNEY umran STATES PATENT OFFICE JAMES B. MQWANE, F BIRMINGHAM, ALABAMA.

CORE-BAR PUSHEB.

To all whom it may concern:

Be it known that I, J Amns R. MCWANE, a citizen of the United States, residing at Birmin ham,Iin the county of Jefferson and State 0% p useful Core-BarPusher, of which the following is a specification.

The invention relates to a core bar pusher. The object of the present invention is to provide a simple, eflicient and comparatively inexpensive core bar pusher of strong and durable construction, capable of exertm great ushingforce against a core bar to oosen t e same within a pipe after the latter has been cast, and, ada ted to assist or supplement the action 0 core bar ulling mechanism, such as disclosed in atents Nos. 967 ,039and 967,041, granted, to me Aug. 9, 1910.

A. further ob'ect of the invention is to provide a doub e acting reciprocatory core ar pusher of this character, designed to be located inthe space between two parallel pipe runs, and adapted to operate al ernately on the core'bars of the pipes of the spaced runs, andjequipped with two sets of p ungers, connected with each other, whereby the outward core bar engaging or pushing movement of one set of lungers will operate to move the other set inwardly and return the same to their. initial position for the next core bar pushing operation.

With these and other objects in view, the -invention consists in the construction and novel combination of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereto appended.

In the drawings :-Figure 1 is a side elevation of a double acting hydraulic core bar pusher, constructed in accordance with this invention. Fig. 2 is aplan view of the same. Fig. 3 is a longitudinal sectional view on the line 3-3 of Fig. 2. Fig.4is an end elevation. Fig. 5 is a horizontal sectional view on the line 55 of Fig. 3. Fig. 6 is a horizontal sectional view on the line 6-6 of 3.

Fig. 7 is a transverse sectional view on theline. 7 7 of Fig. 6. Figs. 8 and 9 are detail views of the inner and outer ends of the cylinders and their supporting stands. Fig.

Specification 01' Letters Patent. Application filed Kay 16, 191}. Serial No. 887,624.

Alabama, have invented a new and suitable latentedAiug. 13,1912.

10 is a vertical longitudinal sectional view on the line 10 -10 of Fig. 8. Fig. 11 is a longitudinal sectional view of one of the hollow plungers.

Like numerals of reference designate correspondingparts in all the figures of the drawings.

The specification and drawings are a disclosure of one embodiment of the invention while the claims define the actual scope of the invention.

I the accompanying drawings illustrating the preferred embodiment of the inven-- tion, the hydraulic core bar pusher. comprises in its construction four cylinders 1 arranged in pairs or sets, the members 0 each pair or set being preferably cast inte- 'gral with a supporting stand 2, preferably consisting of a horizontal base 3 and inner and outer transverse supporting portions 4 and 5, butthe standsmay be of an other preferred construction, as will be rea ily-uns derstood. The two stands 2 are arranged end to end, the cylinders of one stand being disposed in alinement with the cylinders ofht supich. are

the other 'stand, and the inner .upri porting portions 4 of the stands, w

tted against each other, are secured together by bolts6, arranged in an. elliptical series around the inner ends of the cylinders, v

erforations 7 being provided in the uprig t su orting portions 4 as clearly illustrated in 1g. 9.'of the drawlngs. The stands are provlded at the bottom or base with depending .vertically disposed transverse flanges 8, which engage and artiallyembrace a supporting blocl: 9 tow oh the stands armsccured b vertical rods 10, but

any other suitable. oundation may be of course provided for the hydrauliccore .bar pusher. The rods 10, which pierce the base of each of the stands, are threaded at'their upper ends for the reception of nuts, and the bottom or base of each standis extended at the outer end beyond the outeruprlight supy an-1nends of the c linders are rovided with openings12, w ich are thrca d for the reception 'of threaded closure plugs 13.

-The cylinders of the two stands are ar- 7 in the outer ends of the hollow cylinders arev arranged in flush relation with the outer edges of'the said plungers, the depth of the recesses 19 corresponding .with the thickness of the annular flanges or headsof the said outer plugs. The recesses '20 in the inner ends of the hollow plungers .are of a depth less than the thickness'of the heads of the inner plugs, which projectslightly beyond the inner ends of the plungers and are adapted to abut against the inner ends of the cylinders. This will prevent the entire area of the inner ends of the plungers from fitting againstthe inner end walls of the cylinders, and are exposed at portions of such area to the action ofthe fluid pressure when the inner plugs are in such abutting relation.

The plungers in eachside of the hydraulic pusher are connected by upper. and lower exteriorly arranged longitudinal rods 21,

f secured at their outer ends to vertical cross heads 22, which are mounted upon the outer ends of the plungers 14. .The .outer ends 23 of the hollow plungers are slightly reduced and are secured within central openings 24 of the cross heads 22, which carry horizontally projecting core bar engaging heads 25. The reduced ends 23 extend into the central openings] of the cross heads 22, from the inner faoes; ,thereof, and they terminate short of. the loiiter faces of the same,

- as clearly illustrated in Figs. 3 and 6 of the drawings, and the outer portions of the central openings'of the-cross heads receiveinner annular flanges 26 of the horizontally projecting core bar engaging heads 25. The

annular flanges 26- are of a diameter corresponding to the'diameter of the reduced outer ends 23 of the'plungers, and they are secured within the outer portions of the r 1' openings 24.01? the cross heads by retaining rings 27. The'retaining rings 27 which are fitted against the outer faces of the cross heads, are provided with openings of a diameter to fit the projecting portibns of the core bar engaging heads'23, and their inner peripheral portionsproject inwardly at the central openings of the cross heads and en-- "aga ith the annular flanges 26 of the core bar engaging heads 25. The. said retaining rings are secured to the cross .heads by screws 28, which pierce the retainin and engage threaded holes or socket cross heads. The projecting heads 25, which I strike the core bars, are preferably constructed of brass, but they-may be made of i 1 any other suitable material."

The cross heads, which extend upwardly and downwardly from -fthe plungers, are preferably tapered from'their sides to their ends, and the terminals 29 of the longitudinal connecting rods 21 extend through suitable openings 30 in the ends of the cross heads, and they are threaded for the reception of nuts 31, arranged in pairs and engaging the inner and outer faces of the cross I heads. The faces are provided at the outer ends of the cylinders with suitable bearings rods, and,the said bearings 32 preferably cons st of pedestals 33 and caps 84-, the pedestals being bolted or otherwise secured to the upper edges of the outer upright supporting ortions of the faces.

' 32 for the reception of the upper connecting The caps" are detac ably secured upon the pedestals and form sectional bearings for the upper rods 21. The. lower connectin rods pass through alined openings 35 an 36, formed in the inner and outer upright supporting portions of the faces located below the plane of the cylinders. By coupling the plungers of the longitudinally alined cylinders inthis manner, the plungers; at opposite sides of the hydraulic corei pueher are permitted an independent action f and the outward. core bar engaging movei ng'eht of one set of plungersoperates to move: the other set of plun- "dly and returns the same totli'eir ition for operation.

The ydraulic core bar pusher is double with -the foundry. plant of my co-pending application, filed Mar. 30, 1911,. Serial No.

618,015, and it is adapted particularly for use in the space between two opposite pipe runs, and alternately operates on the core bars of the pipes of the said runs. In practice a pair of pipes of one of the pipe runs with thecore bars therein will be arranged in front of one end of the hydraulic pusher,

actinj 'gg'and is designed for use in connection and the latter will be operated simultaneously with the core bar pulling mechanism 'heretoforereferred to andi will assist or supplement the action of the same, and will enable'tight core bars to be easily pulled, The

outward movement of .onepair of plungers operates through the: connecting. rods to move the other pair or set of plungers inwardly and to return the "same to their initial position to'enable such plungers to operate-on the core' bars of a pair ofpipes of the other pipe run. By this oper'ation,-

the're'ciprocatorydouble actifig hydraulic pusher alternately coeperateswith the core bar pulling-mechanism of the two duplicate plants, but it will be readily understood that 4 it will operate continuously on the core bars of either pipe run, it being of course necesnoses-re tion.

The cylinders are provided at their outer sides with opposite ports 37 for the introduction and exhaust of water or other motive fluid. Suitable pi es 38.are connected. t with the cylinders an are designed to be controlled by'a standard, four-way valve,

, cylinders for connect-mgl the pl or any other suitable means. The of each set of cylinders alternately ome supply'and exhaust pipes, and when the motive fluid is being introduced into one set of cylinders, the other set of c linders is exhausting and vice versa. As t e valve for connecting the ipes '38 and for controlling the feed an exhaust to the motive fluid does not constitute a portion ofthe 'present invention, illustration thereof is deemed Having thus y described my mvention, what I claim as new and desire to secure by Letters Patent, is p 1. A core bar pusher including two alined cylinders, plungers operatin in the cylinders and alternately actuate by 'fluid ressure, and means arranged exteriorly o the I ers with each other, whereby w en one p unger is forced outwardly it will move the other plunger inwardly. I

' 2. A core bar pusher including two alined cylinders arranged end to end, plungers operating m the cylinders and alternately actuated in their outward movement by fluid pressure, cross headsmounted on the plungers at the outer ends thereof, and spaced longitudinal bars connecting the cross heads, whereby when one plunger is forced outwardly it will move the other plunger inwardly. 3. A core bar pusher including separate sets of cylinders, plungers operating 1n the cylinders, the plungers of each set being connected to ther, wher eby when one plunger is f0 outwardly the oth'erplunger will be moved inwardly, and-stands for the cylinders composedof inner and outer supporting portions connected at the top with the cylinders," and a base connectin the uprigglt portions at the bottom 0 the t. A core bar pusher including separate sets of cylinders, plungers operatmg 1n the cylinders, and stands for the cylinders composed of inner and outer suppI rting portions connected at the top wit the cylinders, and a base connecting the upright portions at the bottom of the stands andJErovjded.with depending flanges arran e engage and partially embrace a foun ation. 5. A core bar pusher includin a cylinders, plungerspperating' in t e cylinders, the plungersoii each setoff'cylinders being connected togethergfwhereby when 'ends of the plun ers, said plungers termiouter portions of the openings of the cross ,heads, retaining sets of.

' one plunger is forced outwardly the other plun er will be moved inwardly, and stan for the cylinders composed of inner and outer upright supporting portions, and a base connectmg the supportlng portions, the said inner supporting portions being fitted against each other and secured td gether.

6. A core bar pusher including cylinders, hollow plungers o crating in the cylinders and provided at t heir ends with openings and having recesses at the outer ends of the same, plugs secured in the openings and prov1ded with heads or flanges fitted in the said recesses, and means for connecting the plungers to cause the same to move in unison.

7. A core bar pusher including cylinders, hollow plungers o crating in the cylinders and rovided at their ends with openin and aving recesses at the outer ends of t e same,-plugs secured in the openings and prov1ded with beads or flanges fitted in the said recesses, the inner plugs projecting from and being of a diameter less than the 90 inner ends of the plungers, and means for connecting the plun ers.

8. A core bar pus er including cylinders,

lungers having reduced outer'ends, cross eads having openings ,receivin the reduced endsof the lungers, and rods connecting the cross head s for causing the same to move in unison, whereby when one of the plungers is forced outwardly the other will be moved inwardly.

9. A core bar pusher including 0 linders, plungers operating in the cylin ers and aving reduced outer ends, cross heads hav ing openings receiving the reduced outer nating short of t e outer faceof the cross heads, core bar enga ing heads secured in the outer .portions 0 the openings of the cross heads, and means for connecting the cross heads.

10. A .core bar pusher including cylinders, plungers operating in the cylinders and having reduced outer ends, cross heads having openings receiving the reduced outer ends of the p ungers, sald plungers terminating short of the outer faces of the cross heads, core bar enga 'ng heads provided at their inner ends wit flanges fitted in the rings: through which the core bar engaging heads project, said retaining rings being secured to the cross heads and en aging the flanges of the core bar engaging eads, and means for 'connectmg the cross heads.

11. A core bar pusher including sets of cylinders arranged in alinemcnt, stands supporting the cyllnders, plungers operating in the cylinders, cross heads secured to the plungers and extending upwardly and F f Y 11,035,876

downwardly therefrom, upper and lower In testimony that I claimthe foregoing longitudinal rods eonnectmg, the cross as m own, I-have hereto affixed my s1gnaheads, the lower rods being extended ture m the presence of two witnesses. through the stands, and bearings mounted JAMES R. MOWANE.

5 on the stands and located above the cylin- Witnesses:

ders and receiving the upper longitudinal D. W. WALLACE,

rods. W. J., LYMAN. 

